HYPOTHESES: The investigators expect that the feasibility outcomes will be sufficiently robust to support conducting a subsequent multi-site RCT. The investigators also expect the EPIC WheelS training program will have a significant treatment effect with improvement in wheelchair mobility, compared to a control group. The primary clinical endpoint will be wheelchair skill capacity, as measured by the Wheelchair Skills Test (WST). Secondary clinical outcomes will include wheelchair skill safety; confidence with wheelchair use; mobility; and user evaluation of performance in participation-oriented activities.